Did you try Sure Shot or Brownells.May also try contacting Briley Guns in Houston,TxI bought a 12 ga., 3," SP model within a year of its introduction. I've never had a single problem. Granted, in the past 15 years, it hasn't had that many rounds fired through it, but it sure got a workout in its initial 15-20 years. But I think that was before Remington got into all its financial and quality control problems.
That gun owes me nothing. If it shoots craps tomorrow, I got my moneys worth out of it.